summaryrefslogtreecommitdiffstats
path: root/globals.pl
blob: 273f677d4c78fd3fee6bae8a3e188906ffbd0767 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Terry Weissman <terry@mozilla.org>
#                 Dan Mosedale <dmose@mozilla.org>
#                 Jacob Steenhagen <jake@bugzilla.org>
#                 Bradley Baetz <bbaetz@student.usyd.edu.au>
#                 Christopher Aillon <christopher@aillon.com>
#                 Joel Peshkin <bugreport@peshkin.net>
#                 Dave Lawrence <dkl@redhat.com>
#                 Max Kanat-Alexander <mkanat@kerio.com>

# Contains some global variables and routines used throughout bugzilla.

use strict;

use Bugzilla::DB qw(:DEFAULT :deprecated);
use Bugzilla::Constants;
use Bugzilla::Util;
# Bring ChmodDataFile in until this is all moved to the module
use Bugzilla::Config qw(:DEFAULT ChmodDataFile $localconfig $datadir);
use Bugzilla::BugMail;
use Bugzilla::Auth;
use Bugzilla::User;

# Shut up misguided -w warnings about "used only once".  For some reason,
# "use vars" chokes on me when I try it here.

sub globals_pl_sillyness {
    my $zz;
    $zz = @main::default_column_list;
    $zz = @main::enterable_products;
    $zz = %main::keywordsbyname;
    $zz = @main::legal_bug_status;
    $zz = @main::legal_components;
    $zz = @main::legal_keywords;
    $zz = @main::legal_opsys;
    $zz = @main::legal_platform;
    $zz = @main::legal_priority;
    $zz = @main::legal_product;
    $zz = @main::legal_severity;
    $zz = @main::legal_target_milestone;
    $zz = @main::legal_versions;
    $zz = @main::milestoneurl;
    $zz = %main::proddesc;
    $zz = %main::classdesc;
    $zz = @main::prodmaxvotes;
    $zz = $main::template;
    $zz = $main::userid;
    $zz = $main::vars;
}

#
# Here are the --LOCAL-- variables defined in 'localconfig' that we'll use
# here
# 

# XXX - Move this to Bugzilla::Config once code which uses these has moved out
# of globals.pl
do $localconfig;

use DBI;

use Date::Format;               # For time2str().
use Date::Parse;               # For str2time().

# Use standard Perl libraries for cross-platform file/directory manipulation.
use File::Spec;
    
# Some environment variables are not taint safe
delete @::ENV{'PATH', 'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};

# Cwd.pm in perl 5.6.1 gives a warning if $::ENV{'PATH'} isn't defined
# Set this to '' so that we don't get warnings cluttering the logs on every
# system call
$::ENV{'PATH'} = '';

# Ignore SIGTERM and SIGPIPE - this prevents DB corruption. If the user closes
# their browser window while a script is running, the webserver sends these
# signals, and we don't want to die half way through a write.
$::SIG{TERM} = 'IGNORE';
$::SIG{PIPE} = 'IGNORE';

# The following subroutine is for debugging purposes only.
# Uncommenting this sub and the $::SIG{__DIE__} trap underneath it will
# cause any fatal errors to result in a call stack trace to help track
# down weird errors.
#sub die_with_dignity {
#    use Carp;  # for confess()
#    my ($err_msg) = @_;
#    print $err_msg;
#    confess($err_msg);
#}
#$::SIG{__DIE__} = \&die_with_dignity;

sub GetFieldID {
    my ($f) = (@_);
    SendSQL("SELECT fieldid FROM fielddefs WHERE name = " . SqlQuote($f));
    my $fieldid = FetchOneColumn();
    die "Unknown field id: $f" if !$fieldid;
    return $fieldid;
}

# XXXX - this needs to go away
sub GenerateVersionTable {
    my $dbh = Bugzilla->dbh;

    SendSQL("SELECT versions.value, products.name " .
            "FROM versions, products " .
            "WHERE products.id = versions.product_id " .
            "ORDER BY versions.value");
    my @line;
    my %varray;
    my %carray;
    while (@line = FetchSQLData()) {
        my ($v,$p1) = (@line);
        if (!defined $::versions{$p1}) {
            $::versions{$p1} = [];
        }
        push @{$::versions{$p1}}, $v;
        $varray{$v} = 1;
    }
    SendSQL("SELECT components.name, products.name " .
            "FROM components, products " .
            "WHERE products.id = components.product_id " .
            "ORDER BY components.name");
    while (@line = FetchSQLData()) {
        my ($c,$p) = (@line);
        if (!defined $::components{$p}) {
            $::components{$p} = [];
        }
        my $ref = $::components{$p};
        push @$ref, $c;
        $carray{$c} = 1;
    }

    SendSQL("SELECT products.name, classifications.name " .
            "FROM products, classifications " .
            "WHERE classifications.id = products.classification_id " .
            "ORDER BY classifications.name");
    while (@line = FetchSQLData()) {
        my ($p,$c) = (@line);
        if (!defined $::classifications{$c}) {
            $::classifications{$c} = [];
        }
        my $ref = $::classifications{$c};
        push @$ref, $p;
    }

    my $dotargetmilestone = 1;  # This used to check the param, but there's
                                # enough code that wants to pretend we're using
                                # target milestones, even if they don't get
                                # shown to the user.  So we cache all the data
                                # about them anyway.

    my $mpart = $dotargetmilestone ? ", milestoneurl" : "";

    SendSQL("select name, description from classifications ORDER BY name");
    while (@line = FetchSQLData()) {
        my ($n, $d) = (@line);
        $::classdesc{$n} = $d;
    }

    SendSQL("select name, description, votesperuser, disallownew$mpart from products ORDER BY name");
    while (@line = FetchSQLData()) {
        my ($p, $d, $votesperuser, $dis, $u) = (@line);
        $::proddesc{$p} = $d;
        if (!$dis && scalar($::components{$p})) {
            push @::enterable_products, $p;
        }
        if ($dotargetmilestone) {
            $::milestoneurl{$p} = $u;
        }
        $::prodmaxvotes{$p} = $votesperuser;
    }
            
    @::log_columns = $dbh->bz_table_columns('bugs');
    
    foreach my $i ("bug_id", "creation_ts", "delta_ts", "lastdiffed") {
        my $w = lsearch(\@::log_columns, $i);
        if ($w >= 0) {
            splice(@::log_columns, $w, 1);
        }
    }
    @::log_columns = (sort(@::log_columns));

    @::legal_priority   = get_legal_field_values("priority");
    @::legal_severity   = get_legal_field_values("bug_severity");
    @::legal_platform   = get_legal_field_values("rep_platform");
    @::legal_opsys      = get_legal_field_values("op_sys");
    @::legal_bug_status = get_legal_field_values("bug_status");
    @::legal_resolution = get_legal_field_values("resolution");

    # 'settable_resolution' is the list of resolutions that may be set 
    # directly by hand in the bug form. Start with the list of legal 
    # resolutions and remove 'MOVED' and 'DUPLICATE' because setting 
    # bugs to those resolutions requires a special process.
    #
    @::settable_resolution = @::legal_resolution;
    my $w = lsearch(\@::settable_resolution, "DUPLICATE");
    if ($w >= 0) {
        splice(@::settable_resolution, $w, 1);
    }
    my $z = lsearch(\@::settable_resolution, "MOVED");
    if ($z >= 0) {
        splice(@::settable_resolution, $z, 1);
    }

    my @list = sort { uc($a) cmp uc($b)} keys(%::versions);
    @::legal_product = @list;

    require File::Temp;
    my ($fh, $tmpname) = File::Temp::tempfile("versioncache.XXXXX",
                                              DIR => "$datadir");

    print $fh "#\n";
    print $fh "# DO NOT EDIT!\n";
    print $fh "# This file is automatically generated at least once every\n";
    print $fh "# hour by the GenerateVersionTable() sub in globals.pl.\n";
    print $fh "# Any changes you make will be overwritten.\n";
    print $fh "#\n";

    require Data::Dumper;
    print $fh (Data::Dumper->Dump([\@::log_columns, \%::versions],
                                  ['*::log_columns', '*::versions']));

    foreach my $i (@list) {
        if (!defined $::components{$i}) {
            $::components{$i} = [];
        }
    }
    @::legal_versions = sort {uc($a) cmp uc($b)} keys(%varray);
    print $fh (Data::Dumper->Dump([\@::legal_versions, \%::components],
                                  ['*::legal_versions', '*::components']));
    @::legal_components = sort {uc($a) cmp uc($b)} keys(%carray);

    print $fh (Data::Dumper->Dump([\@::legal_components, \@::legal_product,
                                   \@::legal_priority, \@::legal_severity,
                                   \@::legal_platform, \@::legal_opsys,
                                   \@::legal_bug_status, \@::legal_resolution],
                                  ['*::legal_components', '*::legal_product',
                                   '*::legal_priority', '*::legal_severity',
                                   '*::legal_platform', '*::legal_opsys',
                                   '*::legal_bug_status', '*::legal_resolution']));

    print $fh (Data::Dumper->Dump([\@::settable_resolution, \%::proddesc,
                                   \%::classifications, \%::classdesc,
                                   \@::enterable_products, \%::prodmaxvotes],
                                  ['*::settable_resolution', '*::proddesc',
                                   '*::classifications', '*::classdesc',
                                   '*::enterable_products', '*::prodmaxvotes']));

    if ($dotargetmilestone) {
        # reading target milestones in from the database - matthew@zeroknowledge.com
        SendSQL("SELECT milestones.value, products.name " .
                "FROM milestones, products " .
                "WHERE products.id = milestones.product_id " .
                "ORDER BY milestones.sortkey, milestones.value");
        my @line;
        my %tmarray;
        @::legal_target_milestone = ();
        while(@line = FetchSQLData()) {
            my ($tm, $pr) = (@line);
            if (!defined $::target_milestone{$pr}) {
                $::target_milestone{$pr} = [];
            }
            push @{$::target_milestone{$pr}}, $tm;
            if (!exists $tmarray{$tm}) {
                $tmarray{$tm} = 1;
                push(@::legal_target_milestone, $tm);
            }
        }

        print $fh (Data::Dumper->Dump([\%::target_milestone,
                                       \@::legal_target_milestone,
                                       \%::milestoneurl],
                                      ['*::target_milestone',
                                       '*::legal_target_milestone',
                                       '*::milestoneurl']));
    }

    SendSQL("SELECT id, name FROM keyworddefs ORDER BY name");
    while (MoreSQLData()) {
        my ($id, $name) = FetchSQLData();
        push(@::legal_keywords, $name);
        $name = lc($name);
        $::keywordsbyname{$name} = $id;
    }

    print $fh (Data::Dumper->Dump([\@::legal_keywords, \%::keywordsbyname],
                                  ['*::legal_keywords', '*::keywordsbyname']));

    print $fh "1;\n";
    close $fh;

    rename $tmpname, "$datadir/versioncache" || die "Can't rename $tmpname to versioncache";
    ChmodDataFile("$datadir/versioncache", 0666);
}


sub GetKeywordIdFromName {
    my ($name) = (@_);
    $name = lc($name);
    return $::keywordsbyname{$name};
}


$::VersionTableLoaded = 0;
sub GetVersionTable {
    return if $::VersionTableLoaded;
    my $mtime = file_mod_time("$datadir/versioncache");
    if (!defined $mtime || $mtime eq "" || !-r "$datadir/versioncache") {
        $mtime = 0;
    }
    if (time() - $mtime > 3600) {
        use Bugzilla::Token;
        Bugzilla::Token::CleanTokenTable() if Bugzilla->dbwritesallowed;
        GenerateVersionTable();
    }
    require "$datadir/versioncache";
    if (!defined %::versions) {
        GenerateVersionTable();
        do "$datadir/versioncache";

        if (!defined %::versions) {
            die "Can't generate file $datadir/versioncache";
        }
    }
    $::VersionTableLoaded = 1;
}

sub GenerateRandomPassword {
    my $size = (shift or 10); # default to 10 chars if nothing specified
    return join("", map{ ('0'..'9','a'..'z','A'..'Z')[rand 62] } (1..$size));
}

#
# This function checks if there are any entry groups defined.
# If called with no arguments, it identifies
# entry groups for all products.  If called with a product
# id argument, it checks for entry groups associated with 
# one particular product.
sub AnyEntryGroups {
    my $product_id = shift;
    $product_id = 0 unless ($product_id);
    return $::CachedAnyEntryGroups{$product_id} 
        if defined($::CachedAnyEntryGroups{$product_id});
    my $dbh = Bugzilla->dbh;
    PushGlobalSQLState();
    my $query = "SELECT 1 FROM group_control_map WHERE entry != 0";
    $query .= " AND product_id = $product_id" if ($product_id);
    $query .= " " . $dbh->sql_limit(1);
    SendSQL($query);
    if (MoreSQLData()) {
       $::CachedAnyEntryGroups{$product_id} = MoreSQLData();
       FetchSQLData();
       PopGlobalSQLState();
       return $::CachedAnyEntryGroups{$product_id};
    } else {
       return undef;
    }
}
#
# This function checks if there are any default groups defined.
# If so, then groups may have to be changed when bugs move from
# one bug to another.
sub AnyDefaultGroups {
    return $::CachedAnyDefaultGroups if defined($::CachedAnyDefaultGroups);
    my $dbh = Bugzilla->dbh;
    PushGlobalSQLState();
    SendSQL("SELECT 1 FROM group_control_map, groups WHERE " .
            "groups.id = group_control_map.group_id " .
            "AND isactive != 0 AND " .
            "(membercontrol = " . CONTROLMAPDEFAULT .
            " OR othercontrol = " . CONTROLMAPDEFAULT .
            ") " . $dbh->sql_limit(1));
    $::CachedAnyDefaultGroups = MoreSQLData();
    FetchSQLData();
    PopGlobalSQLState();
    return $::CachedAnyDefaultGroups;
}

#
# This function checks if, given a product id, the user can edit
# bugs in this product at all.
sub CanEditProductId {
    my ($productid) = @_;
    my $dbh = Bugzilla->dbh;
    my $query = "SELECT group_id FROM group_control_map " .
                "WHERE product_id = $productid " .
                "AND canedit != 0 "; 
    if (%{Bugzilla->user->groups}) {
        $query .= "AND group_id NOT IN(" . 
                   join(',', values(%{Bugzilla->user->groups})) . ") ";
    }
    $query .= $dbh->sql_limit(1);
    PushGlobalSQLState();
    SendSQL($query);
    my ($result) = FetchSQLData();
    PopGlobalSQLState();
    return (!defined($result));
}

sub IsInClassification {
    my ($classification,$productname) = @_;

    if (! Param('useclassification')) {
        return 1;
    } else {
        my $query = "SELECT classifications.name " .
          "FROM products,classifications " .
            "WHERE products.classification_id=classifications.id ";
        $query .= "AND products.name = " . SqlQuote($productname);
        PushGlobalSQLState();
        SendSQL($query);
        my ($ret) = FetchSQLData();
        PopGlobalSQLState();
        return ($ret eq $classification);
    }
}

#
# This function determines if a user can enter bugs in the named
# product.
sub CanEnterProduct {
    my ($productname) = @_;
    my $dbh = Bugzilla->dbh;
    my $query = "SELECT group_id IS NULL " .
                "FROM products " .
                "LEFT JOIN group_control_map " .
                "ON group_control_map.product_id = products.id " .
                "AND group_control_map.entry != 0 ";
    if (%{Bugzilla->user->groups}) {
        $query .= "AND group_id NOT IN(" . 
                   join(',', values(%{Bugzilla->user->groups})) . ") ";
    }
    $query .= "WHERE products.name = " . SqlQuote($productname) . " " .
              $dbh->sql_limit(1);
    PushGlobalSQLState();
    SendSQL($query);
    my ($ret) = FetchSQLData();
    PopGlobalSQLState();
    return ($ret);
}

sub GetEnterableProducts {
    my @products;
    # XXX rewrite into pure SQL instead of relying on legal_products?
    foreach my $p (@::legal_product) {
        if (CanEnterProduct($p)) {
            push @products, $p;
        }
    }
    return (@products);
}


#
# This function returns an alphabetical list of product names to which
# the user can enter bugs.  If the $by_id parameter is true, also retrieves IDs
# and pushes them onto the list as id, name [, id, name...] for easy slurping
# into a hash by the calling code.
sub GetSelectableProducts {
    my ($by_id,$by_classification) = @_;

    my $extra_sql = $by_id ? "id, " : "";

    my $extra_from_sql = $by_classification ? " INNER JOIN classifications"
        . " ON classifications.id = products.classification_id" : "";

    my $query = "SELECT $extra_sql products.name " .
                "FROM products $extra_from_sql " .
                "LEFT JOIN group_control_map " .
                "ON group_control_map.product_id = products.id ";
    if (Param('useentrygroupdefault')) {
        $query .= "AND group_control_map.entry != 0 ";
    } else {
        $query .= "AND group_control_map.membercontrol = " .
                  CONTROLMAPMANDATORY . " ";
    }
    if (%{Bugzilla->user->groups}) {
        $query .= "AND group_id NOT IN(" . 
                   join(',', values(%{Bugzilla->user->groups})) . ") ";
    }
    $query .= "WHERE group_id IS NULL ";
    if ($by_classification) {
        $query .= "AND classifications.name = ";
        $query .= SqlQuote($by_classification) . " ";
    }
    $query .= "ORDER BY name";
    PushGlobalSQLState();
    SendSQL($query);
    my @products = ();
    push(@products, FetchSQLData()) while MoreSQLData();
    PopGlobalSQLState();
    return (@products);
}

# GetSelectableProductHash
# returns a hash containing 
# legal_products => an enterable product list
# legal_(components|versions|milestones) =>
#   the list of components, versions, and milestones of enterable products
# (components|versions|milestones)_by_product
#    => a hash of component lists for each enterable product
# Milestones only get returned if the usetargetmilestones parameter is set.
sub GetSelectableProductHash {
    # The hash of selectable products and their attributes that gets returned
    # at the end of this function.
    my $selectables = {};

    my %products = GetSelectableProducts(1);

    $selectables->{legal_products} = [sort values %products];

    # Run queries that retrieve the list of components, versions,
    # and target milestones (if used) for the selectable products.
    my @tables = qw(components versions);
    push(@tables, 'milestones') if Param('usetargetmilestone');

    PushGlobalSQLState();
    foreach my $table (@tables) {
        my %values;
        my %values_by_product;

        if (scalar(keys %products)) {
            # Why oh why can't we standardize on these names?!?
            my $fld = ($table eq "components" ? "name" : "value");

            my $query = "SELECT $fld, product_id FROM $table WHERE product_id " .
                        "IN (" . join(",", keys %products) . ") ORDER BY $fld";
            SendSQL($query);

            while (MoreSQLData()) {
                my ($name, $product_id) = FetchSQLData();
                next unless $name;
                $values{$name} = 1;
                push @{$values_by_product{$products{$product_id}}}, $name;
            }
        }

        $selectables->{"legal_$table"} = [sort keys %values];
        $selectables->{"${table}_by_product"} = \%values_by_product;
    }
    PopGlobalSQLState();

    return $selectables;
}

#
# This function returns an alphabetical list of classifications that has products the user can enter bugs.
sub GetSelectableClassifications {
    my @selectable_classes = ();

    foreach my $c (sort keys %::classdesc) {
        if ( scalar(GetSelectableProducts(0,$c)) > 0) {
           push(@selectable_classes,$c);
        }
    }
    return (@selectable_classes);
}


sub ValidatePassword {
    # Determines whether or not a password is valid (i.e. meets Bugzilla's
    # requirements for length and content).    
    # If a second password is passed in, this function also verifies that
    # the two passwords match.
    my ($password, $matchpassword) = @_;
    
    if (length($password) < 3) {
        ThrowUserError("password_too_short");
    } elsif (length($password) > 16) {
        ThrowUserError("password_too_long");
    } elsif ((defined $matchpassword) && ($password ne $matchpassword)) {
        ThrowUserError("passwords_dont_match");
    }
}

sub DBID_to_name {
    my ($id) = (@_);
    return "__UNKNOWN__" if !defined $id;
    # $id should always be a positive integer
    if ($id =~ m/^([1-9][0-9]*)$/) {
        $id = $1;
    } else {
        $::cachedNameArray{$id} = "__UNKNOWN__";
    }
    if (!defined $::cachedNameArray{$id}) {
        PushGlobalSQLState();
        SendSQL("select login_name from profiles where userid = $id");
        my $r = FetchOneColumn();
        PopGlobalSQLState();
        if (!defined $r || $r eq "") {
            $r = "__UNKNOWN__";
        }
        $::cachedNameArray{$id} = $r;
    }
    return $::cachedNameArray{$id};
}

sub DBNameToIdAndCheck {
    my ($name) = (@_);
    my $result = login_to_id($name);
    if ($result > 0) {
        return $result;
    }

    ThrowUserError("invalid_username", { name => $name });
}

sub get_classification_id {
    my ($classification) = @_;
    PushGlobalSQLState();
    SendSQL("SELECT id FROM classifications WHERE name = " . SqlQuote($classification));
    my ($classification_id) = FetchSQLData();
    PopGlobalSQLState();
    return $classification_id;
}

sub get_classification_name {
    my ($classification_id) = @_;
    die "non-numeric classification_id '$classification_id' passed to get_classification_name"
      unless ($classification_id =~ /^\d+$/);
    PushGlobalSQLState();
    SendSQL("SELECT name FROM classifications WHERE id = $classification_id");
    my ($classification) = FetchSQLData();
    PopGlobalSQLState();
    return $classification;
}



sub get_product_id {
    my ($prod) = @_;
    PushGlobalSQLState();
    SendSQL("SELECT id FROM products WHERE name = " . SqlQuote($prod));
    my ($prod_id) = FetchSQLData();
    PopGlobalSQLState();
    return $prod_id;
}

sub get_product_name {
    my ($prod_id) = @_;
    die "non-numeric prod_id '$prod_id' passed to get_product_name"
      unless ($prod_id =~ /^\d+$/);
    PushGlobalSQLState();
    SendSQL("SELECT name FROM products WHERE id = $prod_id");
    my ($prod) = FetchSQLData();
    PopGlobalSQLState();
    return $prod;
}

sub get_component_id {
    my ($prod_id, $comp) = @_;
    return undef unless ($prod_id && ($prod_id =~ /^\d+$/));
    PushGlobalSQLState();
    SendSQL("SELECT id FROM components " .
            "WHERE product_id = $prod_id AND name = " . SqlQuote($comp));
    my ($comp_id) = FetchSQLData();
    PopGlobalSQLState();
    return $comp_id;
}

sub get_component_name {
    my ($comp_id) = @_;
    die "non-numeric comp_id '$comp_id' passed to get_component_name"
      unless ($comp_id =~ /^\d+$/);
    PushGlobalSQLState();
    SendSQL("SELECT name FROM components WHERE id = $comp_id");
    my ($comp) = FetchSQLData();
    PopGlobalSQLState();
    return $comp;
}

# This routine quoteUrls contains inspirations from the HTML::FromText CPAN
# module by Gareth Rees <garethr@cre.canon.co.uk>.  It has been heavily hacked,
# all that is really recognizable from the original is bits of the regular
# expressions.
# This has been rewritten to be faster, mainly by substituting 'as we go'.
# If you want to modify this routine, read the comments carefully

sub quoteUrls {
    my ($text) = (@_);
    return $text unless $text;

    # We use /g for speed, but uris can have other things inside them
    # (http://foo/bug#3 for example). Filtering that out filters valid
    # bug refs out, so we have to do replacements.
    # mailto can't contain space or #, so we don't have to bother for that
    # Do this by escaping \0 to \1\0, and replacing matches with \0\0$count\0\0
    # \0 is used because its unliklely to occur in the text, so the cost of
    # doing this should be very small
    # Also, \0 won't appear in the value_quote'd bug title, so we don't have
    # to worry about bogus substitutions from there

    # escape the 2nd escape char we're using
    my $chr1 = chr(1);
    $text =~ s/\0/$chr1\0/g;

    # However, note that adding the title (for buglinks) can affect things
    # In particular, attachment matches go before bug titles, so that titles
    # with 'attachment 1' don't double match.
    # Dupe checks go afterwards, because that uses ^ and \Z, which won't occur
    # if it was subsituted as a bug title (since that always involve leading
    # and trailing text)

    # Because of entities, its easier (and quicker) to do this before escaping

    my @things;
    my $count = 0;
    my $tmp;

    # non-mailto protocols
    my $protocol_re = qr/(afs|cid|ftp|gopher|http|https|irc|mid|news|nntp|prospero|telnet|view-source|wais)/i;

    $text =~ s~\b(${protocol_re}:  # The protocol:
                  [^\s<>\"]+       # Any non-whitespace
                  [\w\/])          # so that we end in \w or /
              ~($tmp = html_quote($1)) &&
               ($things[$count++] = "<a href=\"$tmp\">$tmp</a>") &&
               ("\0\0" . ($count-1) . "\0\0")
              ~egox;

    # We have to quote now, otherwise our html is itsself escaped
    # THIS MEANS THAT A LITERAL ", <, >, ' MUST BE ESCAPED FOR A MATCH

    $text = html_quote($text);

    # mailto:
    # Use |<nothing> so that $1 is defined regardless
    $text =~ s~\b(mailto:|)?([\w\.\-\+\=]+\@[\w\-]+(?:\.[\w\-]+)+)\b
              ~<a href=\"mailto:$2\">$1$2</a>~igx;

    # attachment links - handle both cases separately for simplicity
    $text =~ s~((?:^Created\ an\ |\b)attachment\s*\(id=(\d+)\))
              ~($things[$count++] = GetAttachmentLink($2, $1)) &&
               ("\0\0" . ($count-1) . "\0\0")
              ~egmx;

    $text =~ s~\b(attachment\s*\#?\s*(\d+))
              ~($things[$count++] = GetAttachmentLink($2, $1)) &&
               ("\0\0" . ($count-1) . "\0\0")
              ~egmxi;

    # This handles bug a, comment b type stuff. Because we're using /g
    # we have to do this in one pattern, and so this is semi-messy.
    # Also, we can't use $bug_re?$comment_re? because that will match the
    # empty string
    my $bug_re = qr/bug\s*\#?\s*(\d+)/i;
    my $comment_re = qr/comment\s*\#?\s*(\d+)/i;
    $text =~ s~\b($bug_re(?:\s*,?\s*$comment_re)?|$comment_re)
              ~ # We have several choices. $1 here is the link, and $2-4 are set
                # depending on which part matched
               (defined($2) ? GetBugLink($2,$1,$3) :
                              "<a href=\"#c$4\">$1</a>")
              ~egox;

    # Duplicate markers
    $text =~ s~(?<=^\*\*\*\ This\ bug\ has\ been\ marked\ as\ a\ duplicate\ of\ )
               (\d+)
               (?=\ \*\*\*\Z)
              ~GetBugLink($1, $1)
              ~egmx;

    # Now remove the encoding hacks
    $text =~ s/\0\0(\d+)\0\0/$things[$1]/eg;
    $text =~ s/$chr1\0/\0/g;

    return $text;
}

# GetAttachmentLink creates a link to an attachment,
# including its title.

sub GetAttachmentLink {
    my ($attachid, $link_text) = @_;
    detaint_natural($attachid) ||
        die "GetAttachmentLink() called with non-integer attachment number";

    # If we've run GetAttachmentLink() for this attachment before,
    # %::attachlink will contain an anonymous array ref of relevant
    # values.  If not, we need to get the information from the database.
    if (! defined $::attachlink{$attachid}) {
        # Make sure any unfetched data from a currently running query
        # is saved off rather than overwritten
        PushGlobalSQLState();

        SendSQL("SELECT bug_id, isobsolete, description 
                 FROM attachments WHERE attach_id = $attachid");

        if (MoreSQLData()) {
            my ($bugid, $isobsolete, $desc) = FetchSQLData();
            my $title = "";
            my $className = "";
            if (Bugzilla->user->can_see_bug($bugid)) {
                $title = $desc;
            }
            if ($isobsolete) {
                $className = "bz_obsolete";
            }
            $::attachlink{$attachid} = [value_quote($title), $className];
        }
        else {
            # Even if there's nothing in the database, we want to save a blank
            # anonymous array in the %::attachlink hash so the query doesn't get
            # run again next time we're called for this attachment number.
            $::attachlink{$attachid} = [];
        }
        # All done with this sidetrip
        PopGlobalSQLState();
    }

    # Now that we know we've got all the information we're gonna get, let's
    # return the link (which is the whole reason we were called :)
    my ($title, $className) = @{$::attachlink{$attachid}};
    # $title will be undefined if the attachment didn't exist in the database.
    if (defined $title) {
        my $linkval = "attachment.cgi?id=$attachid&amp;action=edit";
        return qq{<a href="$linkval" class="$className" title="$title">$link_text</a>};
    }
    else {
        return qq{$link_text};
    }
}

# GetBugLink creates a link to a bug, including its title.
# It takes either two or three parameters:
#  - The bug number
#  - The link text, to place between the <a>..</a>
#  - An optional comment number, for linking to a particular
#    comment in the bug

sub GetBugLink {
    my ($bug_num, $link_text, $comment_num) = @_;
    $bug_num || return "&lt;missing bug number&gt;";
    detaint_natural($bug_num) || return "&lt;invalid bug number&gt;";

    # If we've run GetBugLink() for this bug number before, %::buglink
    # will contain an anonymous array ref of relevent values, if not
    # we need to get the information from the database.
    if (! defined $::buglink{$bug_num}) {
        # Make sure any unfetched data from a currently running query
        # is saved off rather than overwritten
        PushGlobalSQLState();

        SendSQL("SELECT bugs.bug_status, resolution, short_desc " .
                "FROM bugs WHERE bugs.bug_id = $bug_num");

        # If the bug exists, save its data off for use later in the sub
        if (MoreSQLData()) {
            my ($bug_state, $bug_res, $bug_desc) = FetchSQLData();
            # Initialize these variables to be "" so that we don't get warnings
            # if we don't change them below (which is highly likely).
            my ($pre, $title, $post) = ("", "", "");

            $title = $bug_state;
            if ($bug_state eq 'UNCONFIRMED') {
                $pre = "<i>";
                $post = "</i>";
            }
            elsif (! IsOpenedState($bug_state)) {
                $pre = '<span class="bz_closed">';
                $title .= " $bug_res";
                $post = '</span>';
            }
            if (Bugzilla->user->can_see_bug($bug_num)) {
                $title .= " - $bug_desc";
            }
            $::buglink{$bug_num} = [$pre, value_quote($title), $post];
        }
        else {
            # Even if there's nothing in the database, we want to save a blank
            # anonymous array in the %::buglink hash so the query doesn't get
            # run again next time we're called for this bug number.
            $::buglink{$bug_num} = [];
        }
        # All done with this sidetrip
        PopGlobalSQLState();
    }

    # Now that we know we've got all the information we're gonna get, let's
    # return the link (which is the whole reason we were called :)
    my ($pre, $title, $post) = @{$::buglink{$bug_num}};
    # $title will be undefined if the bug didn't exist in the database.
    if (defined $title) {
        my $linkval = "show_bug.cgi?id=$bug_num";
        if (defined $comment_num) {
            $linkval .= "#c$comment_num";
        }
        return qq{$pre<a href="$linkval" title="$title">$link_text</a>$post};
    }
    else {
        return qq{$link_text};
    }
}

sub GetLongDescriptionAsText {
    my ($id, $start, $end) = (@_);
    my $result = "";
    my $count = 0;
    my $anyprivate = 0;
    my $dbh = Bugzilla->dbh;
    my ($query) = ("SELECT profiles.login_name, " .
                   $dbh->sql_date_format('longdescs.bug_when', '%Y.%m.%d %H:%i') . ", " .
                   "       longdescs.thetext, longdescs.isprivate, " .
                   "       longdescs.already_wrapped " .
                   "FROM   longdescs, profiles " .
                   "WHERE  profiles.userid = longdescs.who " .
                   "AND    longdescs.bug_id = $id ");

    # $start will be undef for New bugs, and defined for pre-existing bugs.
    if ($start) {
        # If $start is not NULL, obtain the count-index
        # of this comment for the leading "Comment #xxx" line.)
        SendSQL("SELECT count(*) FROM longdescs " .
                " WHERE bug_id = $id AND bug_when <= '$start'");
        ($count) = (FetchSQLData());
         
        $query .= " AND longdescs.bug_when > '$start'"
                . " AND longdescs.bug_when <= '$end' ";
    }

    $query .= "ORDER BY longdescs.bug_when";
    SendSQL($query);
    while (MoreSQLData()) {
        my ($who, $when, $text, $isprivate, $work_time, $already_wrapped) = 
            (FetchSQLData());
        if ($count) {
            $result .= "\n\n------- Comment #$count from $who".Param('emailsuffix')."  ".
                Bugzilla::Util::format_time($when) . " -------\n";
        }
        if (($isprivate > 0) && Param("insidergroup")) {
            $anyprivate = 1;
        }
        $result .= ($already_wrapped ? $text : wrap_comment($text));
        $count++;
    }

    return ($result, $anyprivate);
}

# Returns a list of all the legal values for a field that has a
# list of legal values, like rep_platform or resolution.
sub get_legal_field_values {
    my ($field) = @_;
    my $dbh = Bugzilla->dbh;
    my $result_ref = $dbh->selectcol_arrayref(
         "SELECT value FROM $field
           WHERE isactive = ?
        ORDER BY sortkey, value", undef, (1));
    return @$result_ref;
}

sub BugInGroupId {
    my ($bugid, $groupid) = (@_);
    PushGlobalSQLState();
    SendSQL("SELECT bug_id != 0 FROM bug_group_map
            WHERE bug_id = $bugid
            AND group_id = $groupid");
    my $bugingroup = FetchOneColumn();
    PopGlobalSQLState();
    return $bugingroup;
}

sub GroupExists {
    my ($groupname) = (@_);
    PushGlobalSQLState();
    SendSQL("SELECT id FROM groups WHERE name=" . SqlQuote($groupname));
    my $id = FetchOneColumn();
    PopGlobalSQLState();
    return $id;
}

sub GroupNameToId {
    my ($groupname) = (@_);
    PushGlobalSQLState();
    SendSQL("SELECT id FROM groups WHERE name=" . SqlQuote($groupname));
    my $id = FetchOneColumn();
    PopGlobalSQLState();
    return $id;
}

sub GroupIdToName {
    my ($groupid) = (@_);
    PushGlobalSQLState();
    SendSQL("SELECT name FROM groups WHERE id = $groupid");
    my $name = FetchOneColumn();
    PopGlobalSQLState();
    return $name;
}


# Determines whether or not a group is active by checking 
# the "isactive" column for the group in the "groups" table.
# Note: This function selects groups by id rather than by name.
sub GroupIsActive {
    my ($groupid) = (@_);
    $groupid ||= 0;
    PushGlobalSQLState();
    SendSQL("SELECT isactive FROM groups WHERE id=$groupid");
    my $isactive = FetchOneColumn();
    PopGlobalSQLState();
    return $isactive;
}

# Determines if the given bug_status string represents an "Opened" bug.  This
# routine ought to be parameterizable somehow, as people tend to introduce
# new states into Bugzilla.

sub IsOpenedState {
    my ($state) = (@_);
    if (grep($_ eq $state, OpenStates())) {
        return 1;
    }
    return 0;
}

# This sub will return an array containing any status that
# is considered an open bug.

sub OpenStates {
    return ('NEW', 'REOPENED', 'ASSIGNED', 'UNCONFIRMED');
}


###############################################################################

# Constructs a format object from URL parameters. You most commonly call it 
# like this:
# my $format = GetFormat("foo/bar", scalar($cgi->param('format')),
#                        scalar($cgi->param('ctype')));

sub GetFormat {
    my ($template, $format, $ctype) = @_;

    $ctype ||= "html";
    $format ||= "";

    # Security - allow letters and a hyphen only
    $ctype =~ s/[^a-zA-Z\-]//g;
    $format =~ s/[^a-zA-Z\-]//g;
    trick_taint($ctype);
    trick_taint($format);

    $template .= ($format ? "-$format" : "");
    $template .= ".$ctype.tmpl";

    # Now check that the template actually exists. We only want to check
    # if the template exists; any other errors (eg parse errors) will
    # end up being detected later.
    eval {
        Bugzilla->template->context->template($template);
    };
    # This parsing may seem fragile, but its OK:
    # http://lists.template-toolkit.org/pipermail/templates/2003-March/004370.html
    # Even if it is wrong, any sort of error is going to cause a failure
    # eventually, so the only issue would be an incorrect error message
    if ($@ && $@->info =~ /: not found$/) {
        ThrowUserError("format_not_found", { 'format' => $format,
                                             'ctype' => $ctype,
                                           });
    }

    # Else, just return the info
    return
    {
        'template'    => $template ,
        'extension'   => $ctype ,
        'ctype'       => Bugzilla::Constants::contenttypes->{$ctype} ,
    };
}

############# Live code below here (that is, not subroutine defs) #############

use Bugzilla;

$::template = Bugzilla->template();

$::vars = {};

1;